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8103005 Primary-ambient decomposition of stereo audio signals using a complex similarity index  
An audio signal is processed to derive primary and ambient components of the signal. The signal is first transformed to generate frequency-domain subband signals. Primary and ambient components...
8094836 Multi-channel decoding systems capable of reducing noise and methods thereof  
A multi-channel decoding method includes: receiving an input signal to generate a first channel output signal and a second channel output signal, wherein the input signal is mixed with a specific...
8094834 Remote auditory spatial communication aid  
The present invention provides a means for two or more remotely-located individuals to communicate information about the spatial coordinates of a location of mutual interest in a more rapid,...
8090116 Vehicle directional electroacoustical transducing  
Vehicle audio systems including directional loudspeakers, particularly directional arrays. An exemplary audio system for a vehicle includes a plurality of audio channels. The vehicle includes a...
8090109 Apparatus for processing audio signal and method thereof  
An apparatus for processing an audio signal and method thereof applied to an audio playback system are disclosed. The apparatus comprises a decoder, an error-correcting circuit and an audio...
8085939 Stereophonic sound reproduction system for compensating low frequency signal and method thereof  
A stereophonic sound reproduction system for compensating a low frequency signal and a method thereof, wherein a mono component signal for compensating low frequency signals which are attenuated...
8085940 Rebalancing of audio  
Rebalancing of an audio signal refers to achieving a balance of perceived loudness, typically of right and left channels, given an unbalanced input. A flexible method to automatically rebalance an...
8086448 Dynamic modification of a high-order perceptual attribute of an audio signal  
Processing an audio signal associated with a sound recording made available to be rendered to an end user is disclosed. The audio signal is received. A high-order perceptual attribute of the audio...
8081764 Audio decoder  
Provided is an audio decoder which can reduce an amount of arithmetic operations while suppressing occurrence of aliasing noise. The audio decoder includes: a decoder (102) and an analysis filter...
8081762 Controlling the decoding of binaural audio signals  
A method for generating a parametrically encoded audio signal, the method comprising: inputting a multi-channel audio signal comprising a plurality of audio channels; generating at least one...
8077474 Variable equalizer apparatus  
A variable equalizer apparatus for forward and/or reverse equalizers in an amplifier. The system can include a structure to allow continuous contact of the signal flow as an equalizer is removed;...
8077881 Sound device  
A sound device is provided with an input terminal for electronic signal input; a low pass filter adapted to filter electronic signals input to the input terminal and to output low frequency range...
8073144 Stereo balance interpolation  
The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by...
8069036 Method and apparatus for processing audio for playback  
A method and apparatus for processing audio for playback to provide a smooth transition between a beginning region of an audio track and an end region of a previous audio track is disclosed. A...
8059823 Method and apparatus for enhancing auditory spatial perception  
In accordance with at least one embodiment, a method and apparatus is provided for generating a first pressure wave propagating in a first direction, said first pressure wave adapted to interact...
8059822 Method and device for actively correcting the acoustic properties of an acoustic space listening zone  
The invention concerns a method and device for actively correcting acoustic properties of a listening zone (27) of an acoustic space (1), comprising means for converting a signal to be reproduced...
8059824 Joint sound synthesis and spatialization  
The invention concerns a process for joint synthesis and spatialization of multiple sound sources in associated spatial positions, including: a) a step of assigning to each source at least one...
8054979 Audio system for improving a signal to noise ratio  
An audio system performing a class-D amplification includes a first pulse width modulation (PWM) signal generation unit and a second PWM signal generation unit. The first PWM signal generation...
8054948 Audio experience for a communications device user  
A system and associated methods provide an audio experience such that a user spatially perceives one or more audio events. One particular method set forth involves obtaining audio events and...
8054980 Apparatus and method for rendering audio information to virtualize speakers in an audio system  
An audio processor, apparatus, and method use physical speakers to emulate one or more additional speakers. The physical speakers produce sounds that, from a listener's perspective, appear to come...
8050433 Apparatus and method to cancel crosstalk and stereo sound generation system using the same  
An apparatus and method for canceling crosstalk between 2-channel speakers and two ears of a listener in a stereo sound generation system. The crosstalk canceling apparatus includes a first signal...
8045840 Video-audio recording apparatus and method, and video-audio reproducing apparatus and method  
A video-audio recording and reproducing apparatus (101) has a built-in stereo microphone (21a, 21b) and an external microphone connection terminal (32). The external microphone connection terminal...
8041040 Sound image control apparatus and sound image control method  
A sound image control apparatus and sound image control method capable of increasing the accuracy, in particular, in the distance direction while keeping fixed intervals of transmission...
8041057 Mixing techniques for mixing audio  
This disclosure describes audio mixing techniques that intelligently combine two or more audio signals into an output signal. The techniques allow audio to be combined, yet create perceptual...
8036389 Apparatus and method of canceling vocal component in an audio signal  
An apparatus and method of canceling a vocal component includes a first vocal canceling unit to delay each of the left and right channel input signals for a predetermined time and to feed-forward...
8036397 Method for estimating the position of a sound source for online calibration of auditory cue to location transformations  
A method for estimating the location of a sound source. First, a first microphone and a second microphone are moved relative to the sound source. Then the Intra-aural Time Difference (ITD) between...
8027494 Acoustic image creation system and program therefor  
With stereophonic sound images of multi-channel audio signals well maintained, 2-channel system audio signals are created. An acoustic image creation system includes: a left-rear localization...
8027476 Sound reproduction apparatus and sound reproduction method  
A sound reproduction apparatus capable of providing a target sensation of sound localization to a listener by using a standard head-related transfer function is provided. In a microphone...
8023659 Mixing system, method and program  
In a situation where a plurality of virtual sound sources are fixedly located, a mixing system allows a listener to increase or decrease the sound volumes of the virtual sound sources with a...
8024187 Pulse allocating method in voice coding  
A pulse allocating method capable of coding stereophonic voice signals efficiently. In the fixed code note retrievals of this pulse allocating method, for individual subframes, the stereophonic...
8019093 Stream segregation for stereo signals  
Separating a source in a stereo signal having a left channel and a right channel includes transforming the signal into a short-time transform domain; classifying portions of the signals having...
8009834 Sound reproduction apparatus and method of enhancing low frequency component  
A sound reproduction apparatus and method enhances a low frequency component in a reproduced sound signal using a reflective sound. The sound reproduction apparatus delays and controls gains of...
7986801 Device having a point and a spatial sound generating-means for providing stereo sound sensation over a large area  
A device is described, having a first (2) and a second (4) sound-generating means and an input for a stereo signal (S) comprising left (L) and right (R) sound signals. The device has an...
7983922 Apparatus and method for generating multi-channel synthesizer control signal and apparatus and method for multi-channel synthesizing  
On an encoder-side, a multi-channel input signal is analyzed for obtaining smoothing control information, which is to be used by a decoder-side multi-channel synthesis for smoothing quantized...
7983429 Speaker system utilizing input from a transducer in proximity to a separate speaker  
A speaker system utilizes input from a transducer that receives an acoustical signal produced by a speaker that is separate from the speaker system. The acoustical signal is amplified and drives a...
7978860 Playback apparatus and playback method  
A playback apparatus includes a forming section which, on the basis of an audio signal to be played back, forms audio signals on a plurality of channels for emitting sounds from a pair of sound...
7974418 Virtualizer with cross-talk cancellation and reverb  
Audio loudspeaker and headphone virtualizers and cross-talk cancellers and methods use separate virtual speaker locations for different Bark frequency bands and a single reverberation filter for...
7974417 Multi-channel bass management  
A multi-channel audio system including first combining circuitry, for combining a first spectral band of a first plurality channels to provide a first bass audio signal stream; second combining...
7974424 Speaker array system  
A speaker array system for outputting, with a simplified construction, sounds audible with a nearly uniform sound volume within an arbitrarily set area. The speaker array system includes a speaker...
7970144 Extracting and modifying a panned source for enhancement and upmix of audio signals  
Modifying a panned source in an audio signal comprising a plurality of channel signals is disclosed. Portions associated with the panned source are identified in at least selected ones of the...
7965978 Transmitting/receiving method, transmitter/receiver, and recording medium therefor  
A transmitting/receiving method that can easily detect an influence exerted in transmission channels at a transmitter/receiver is provided. An acquiring unit 12 acquires left audio data and right...
7961888 Method and system for enhancing bass effect in audio signals  
The quality of music output from audio systems is improved by simulating the effect of low frequency signals in the human ear. This thus allows listeners to perceive the lower frequency signals,...
7957545 Stereo speaker system having acoustic filter for improving low frequency characteristic  
A stereo speaker system including: a speaker unit having a plurality of speakers which output audio; and a filter unit selectively receiving low frequency components of the outputted audio. The...
7945054 Method and apparatus to reproduce wide mono sound  
A wide mono sound reproducing method and apparatus to widen mono sound by using 2 channel speakers. The method include separating an input mono sound signal into a plurality of decorrelated...
7936886 Speaker system to control directivity of a speaker unit using a plurality of microphones and a method thereof  
A speaker system to control directivity of a speaker unit using a plurality of microphones, and a method thereof. The method includes sensing through a plurality of channels a shock sound with an...
7929709 Sound image localization apparatus  
A sound image localization apparatus comprises an L direct output section that produces an output signal by inputting an audio signal of a rear left audio input channel to a filter having a...
7925030 Crosstalk cancellation using load impedence measurements  
A method and ASIC for canceling crosstalk between a first stereo channel and a second stereo channel, wherein a first signal is input to a first output amplifier for the first channel, and a...
7920707 Audio system  
The designation of a localization position is received in accordance with an input position on a dashboard image in a localization-position reception window, and delay times for audio signals...
7920710 Loudspeaker apparatus  
An array loudspeaker is constructed by stacking loudspeaker rows in a plurality of stages, each of the loudspeaker rows being formed by arranging loudspeaker elements in the form of a horizontal...
7907736 Acoustic correction apparatus  
An acoustic correction apparatus processes a pair of left and right input signals to compensate for spatial distortion as a function of frequency when said input signals are reproduced through...